Yala aw delila k’aw yɛrɛ ɲininka mun na pikiri-fɛn dɔw bɛ bɔ ka ɲɛ ani ka dafa, k’a sɔrɔ dɔw bɛ ni nɔgɔ yebali ye walima u bɛ siri nɔgɔ la wa? Jaabi bɛ sɔrɔ draft angles (jatebɔlanw) la – o ye pikirijikɛlan dilanni yɔrɔba ye min bɛ se k’i ka fɛn dilannen cogoya dilan walima k’a tiɲɛ.
Nin sɛbɛn in kɔnɔ, aw bɛna a dɔn ko angɛrɛw nafa ka bon, u nafa, ani u kɛcogo ɲumanw. Aw ka to aw ɲɛ na walasa ka nin ko nafama in master . Pikirili Molidali ..
Angle de draft ye mun ye?
Angle draft ye taper walima slope dɔɔni ye min bɛ fara pikiri-fɛn dɔ kogow kan. O ye dilanfɛn nafamaba ye min b’a to yɔrɔ bɛ se ka bɔ nɔgɔya la ka bɔ nɔgɔ la nɛnɛ kɔfɛ.
Mun na draft angles nafa ka bon kosɛbɛ? Nin ye mun ye:
U bɛ dɔ bɔ ɲɔgɔnkanu na yɔrɔ ni bɔgɔ cɛ bɔli waati .
U bɛ dɔ bɔ a yɔrɔ dɔw tiɲɛni walima u tiɲɛni farati la .
U bɛ dɛmɛ don ka yɔrɔ in cogoya n’a bonya ɲininenw mara .
U bɛ mɔni ɲɛnamaya janya u kɛtɔ ka sɛgɛn ni sɛgɛn dɔgɔya .
Ni a ma kɛ ni draft angles bɛnnenw ye, a yɔrɔw bɛ se ka nɔrɔ nɔgɔ la, o bɛ na ni:
O la, i mago bɛ draft joli la? A bɛ bɔ fɛn caman na, i n’a fɔ:
I n’a fɔ sariyaba dɔ, i ka 1° fo 2° minimuma dɔ labɛn fan kelen na. Walasa ka yɔrɔw walima yɔrɔw sɛgɛsɛgɛ minnu ka dun, aw bɛ se ka dɔ fara a kan fo ka se 3° ma walima ka tɛmɛ o kan.
Mun na draft angle nafa ka bon pikiri kɛli la?
Yala aw delila k’a ɲini ka fɛn dɔ sama min sirilen don kosɛbɛ minɛn dɔ kɔnɔ wa? A bɛ se ka kɛ gɛlɛya yɛrɛ ye, tiɲɛ tɛ? O sariyakolo kelen bɛ tali kɛ pikiri kɛli la. Ni draft angles bɛnnenw tɛ, yɔrɔw bɛ se ka siri nɔgɔ la, o bɛ na ni gɛlɛya caman ye.
A bɛ dɔ bɔ ɲɔgɔnkanu ni tiɲɛni na yɔrɔ dɔ bɔli senfɛ .
Kun fɔlɔ minnu na, olu dɔ ye ko u nafa ka bon kosɛbɛ, o ye ko u bɛ dɔ bɔ ɲɔgɔnkanu na yɔrɔ ni bɔgɔ cɛ bɔli waati. O bɛ dɛmɛ don walasa ka:
A yɔrɔ dɔ deformation .
Surface Scratches .
Ejector Pin Marks .
Ni a y’a to yɔrɔ ka bɔ nɔgɔ la ka ɲɛ, a yɔrɔw bɛ tiɲɛni farati dɔgɔya ani ka a to a ka kɛ fɛn ye min bɛ se ka kɛ ka ɲɛ.
A bɛ dɔ bɔ a sɛgɛn na ani ka a sɛgɛn mɔli la .
Moliw ye waridon nafama ye, wa i b’a fɛ u ka mɛn ni i bɛ se. Draft angles jɔyɔrɔ ka bon kosɛbɛ walasa ka sɛgɛn ni sɛgɛn dɔgɔya nɔgɔ la bɔli senfɛ. U bɛ dɛmɛ don ka:
Ejection forces tilatilali ka bɛn .
Aw bɛ sɔgɔsɔgɔ ni gouging bali .
Aw bɛ mɔli ka ɲɛnamaya janya .
A bɛ a to a ka kɛ finimuguw ye minnu bɛ kɛ ka ɲɛ, minnu bɛ kɛ kelen ye, ani minnu tɛ sɔgɔ .
Ni a bɛ tali kɛ pikiri kɛli la, ɲɛda cogoya nafa ka bon. Angles de draft bɛ dɛmɛ ka i ka yɔrɔw sanfɛla laban ɲininen mara ni:
ka drag marks ni scratches bali .
ka a jira ko fini bɛ kɛ cogo kelen na, min bɛ kɛ cogo kelen na .
Ka fɛnw ni misaliw dafalen mara .
A bɛ dɔ bɔ nɛnɛ waati ni a dilanni musakaw la .
Draft angles fana jɔyɔrɔ ka bon pikiri kɛcogo yɛrɛ la. U bɛ se ka dɛmɛ don ka:
Aw bɛ nɛnɛ waati dɔgɔya ni aw bɛ a to a yɔrɔw ka bɔ nɔgɔ la nɔgɔya la .
Aw bɛ mago bɔ ejection setups complexes la .
ka sɛnɛfɛnw musaka bɛɛ lajɛlen dɔgɔya ni dɔ farali ye u ka baarakɛcogo kan ani ka dɔ bɔ fɛn tiɲɛnenw hakɛ la .
Kuma surun na, draft angles ye dilancogo fitinin ye nka barikama ye min bɛ se ka nɔba bila i ka pikiri kɛli porozɛ ɲɛtaa la. U bɛ a to a yɔrɔ ka ɲi, a bɛ kɛ ni fɛn dilanni ye ka mɛn, ani a dilanni taabolo ɲuman – o bɛɛ bɛ baara kɛ ni musaka dɔgɔyali ye ani a sɔngɔ ka ɲi.
Cogo min na ka angle draft optimale dɔn .
Ka draft angle ɲuman sugandi i ka pikiri-minɛn yɔrɔ la, o bɛ se ka kɛ i n’a fɔ balannako wale. A ka dɔgɔ kojugu, wa i bɛ farati la yɔrɔ bɔli koɲɛw la. A ka ca kojugu, wa i bɛ se ka yɔrɔ in baarakɛcogo walima a cogoya tiɲɛ. O la sa, i bɛ o yɔrɔ duman sɔrɔ cogo di? Fɛn jɔnjɔn dɔw filɛ nin ye minnu ka kan ka jateminɛ:
Kogo ka bon .
Kogo finmanw bɛ kɛ cogoya la, a ka c’a la, a bɛ kɛ ni jiribolo belebelebaw ye walasa ka warping bali ani ka a to a ka bɔ ka ɲɛ. I n’a fɔ sariyaba, laɲini ye:
| Kogow ka | fɛn fitinin min ka dɔgɔn. |
| 0,040 in. | 1° . |
| 0,060 in. | 0,5° ye . |
| 0,080 in. | 0,5° ye . |
| >0.100 in. | 0,5° ye . |
Material Selection .
Fɛn suguya caman bɛ ni shrink hakɛ ni bɔli wajibiyalenw ye. I n'a fo:
Fɛn gɛlɛnw i n’a fɔ polikarbonati, olu bɛ se ka mago don fɛnw na minnu bɛ se ka wuli ka bɔ u nɔ na i n’a fɔ TPE .
Fɛn minnu ka dɔgɔya hakɛ ka bon, olu bɛ se ka kɛ sababu ye ka angles draft belebelebaw de wajibiya .
Ejection mechanism .
Ejection system suguya min bɛ kɛ (misali la, pinɛw, bolokɔniw, walima nɛgɛw) o bɛ se ka nɔ bila draft angle wajibiyalen na. Aw bɛ baro kɛ o kan ni aw ka mogo ye walasa ka bɛnkan sɔrɔ.
Surface fini ani texture .
A ka c’a la, yɔrɔ minnu bɛ sɛbɛnni kɛ, olu mago bɛ fɛn caman na ka tɛmɛ yɔrɔ nɔgɔlenw kan. Sariya ɲuman ye ka 1,5° fara a kan 0,001' texture depth kan.
Kogo juguya .
Kogow minnu ka dun, olu bɛ jiribolo belebelebaw de wajibiya walasa ka nɔrɔli bali ani ka bɔli nɔgɔya. Nin ye laadilikan dɔw ye minnu sinsinnen bɛ kogo juguya kan:
| Kogo juguya | minimum draft angle . |
| 0,25 in. | 0,5° ye . |
| 0,5 in. | 1° . |
| 0,75 in. | 2° . |
| 1 in. | 2° . |
| 1,5 in. | 2° . |
| 2 in. | 2° . |
| Feature Depth . | A ka dɔgɔn ka a bonya/draft . |
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| 0,25 in. | 0,040 in./0,5° . | | | |
| 0,5 in. | 0,040 in./1° . | 0,060 in./0,5° . | | |
| 0,75 in. | 0,040 in./2° . | 0,060 in./1° . | 0,080 in./0,5° . | |
| 1 in. | | 0,060 in./2° . | 0,080 in./1° . | >0,100 in./0,5° . |
| 1,5 in. | | | 0,080 in./2° . | >0,100 in./1° . |
| 2 in. | | | | >0,100 in./2° . |
Ladilikanw bɛɛ lajɛlenw ka ɲɛsin angɛrɛw ma .
Nin ye sariyaba dɔw ye minnu bɛ kɛ ka ɲɛsin draft angles ma:
Standard Draft : 1,5 fo 2 degɛrɛ ye fɛn ɲuman ye a yɔrɔ fanba la fo ka se santimɛtɛrɛ 2 ma.
Dugukolo juguya ladilanni : Aw bɛ degere 1 fara a yɔrɔ juguman insitiri kelen-kelen bɛɛ kan ka tɛmɛ insi 2 kan.
Directional draft : tuma bɛɛ draft ka ɲɛsin 'top' ma min bɛ kɛ ka ɲɛsin mold ma.
Yɔrɔ minnu bɛ sɛbɛn : Aw bɛ 1,5 degere 0,001 inch kɛ texture depth la.
component drafting : piece yɔrɔ bɛɛ ka kan ka kɛ ni draft angle ye.
Metal-on-metal Molding : Aw bɛ baara kɛ ni a ye ka a kɛ degere 3 ye.
Dual-sided drafting : Yɔrɔ minnu bɛ ni cɛmancɛ farali sira ye, olu mago bɛ sɛbɛnni na fan fila bɛɛ la.
Surfaces verticals : A ka dɔgɔn ni 0,5 degɛrɛ ye.
Fɛɛrɛ ɲumanw ka ɲɛsin draft angles dilancogo ma .
Designing for draft bɛ se ka kɛ i n’a fɔ seko ni dɔnko i n’a fɔ dɔnniya. Walasa k’aw dɛmɛ ka taabolo ɲɛnabɔ, an ye fɛɛrɛ ɲuman dɔw lajɛ minnu bɛ sɔrɔ san caman pikiri kɛcogo la.
A daminɛ joona .
Fɛn minnu nafa ka bon kosɛbɛ, olu dɔ ye ka draft angles don a daminɛ na dilancogo la. O bɛ dɛmɛ don ka:
Aw ye aw yɛrɛ tanga fɛnw dilanni kura musakabaw ma kɔfɛ .
Aw ye aw jija aw ka yɔrɔ ka se ka dilan ka ɲɛ .
Aw bɛ bɔli koɲɛw dɔn minnu bɛ se ka kɛ sani u ka kɛ gɛlɛyaw ye .
Baara kɛ ni core-cavity fɛɛrɛ ye .
Ni aw ka yɔrɔ bɛ kɛnɛma yɔrɔ jɛlen, min ka ɲi kosɛbɛ, aw bɛ a lajɛ ka baara kɛ ni koro-kavite fɛɛrɛ ye. O bɛ tali kɛ:
O fɛɛrɛ in b’a To a yɔrɔ bɛ Dɔgɔya ka Bɔ ‘kɔnɔ-yɔrɔ la nɛnɛ waati la, k’a To a bɛ Bɔ saniyalen na ani ko a bɛ Kɛ ni fini ye min tɛ Se ka Kɛ.
Draft surfaces verticales bɛɛ .
Aw ka yɔrɔ jɔlen bɛɛ ka kan ka kɛ ni draft hakɛ dɔ ye, i n’a fɔ:
Ribs .
Gussets .
Louvers .
Bosses .
Snaps .
Hali n’i tɛ se ka draft angle ideal sɔrɔ, i hakili to a la ko: draft o draft ka fisa ni draft ye fewu!
Aw ye jateminɛ kɛ ɲɛda la min bɛ tali kɛ a la .
Ni aw bɛ Draft fara aw ka yɔrɔ kan, aw bɛ miiri kosɛbɛ sɛbɛnfura bɛna kɛ ka ɲɛ min na. O bɛ se ka nɔ bila:
Aw bɛ ɲɛda lajɛ min bɛ nɔ jugu o jugu dɔgɔya yɔrɔ cogoya, a bɛnnen ani a baarakɛcogo la.
Aw kana ɲinɛ sida-action features kɔ .
Ni aw ka yɔrɔ bɛ ni fɛnw ye minnu bɛ kɛrɛfɛ-walew de wajibiya nɔgɔ la (misali la, dingɛw, yɔrɔw, walima u jukɔrɔla tigɛ), aw ye aw jija ka draft fara o yɔrɔw kan fana. O bɛna a to a ka saniya, a ka nɔgɔya ani ka tiɲɛni bali ka kɛ nɔgɔ la.
More draft for abrasive fɛnw .
Fɛn dɔw, i n’a fɔ nilon walima polikarbonati min falen don gilasi la, olu bɛ se ka kɛ fɛn ye min bɛ sɔgɔ ani ka sɛgɛn bila u la waati tɛmɛnen kɔfɛ. O fɛnw kama, a ka fisa ka baara Kɛ ni 'kɔnɔna-yɔrɔ ye min ka bon dɔɔnin (3°+) walasa ka 'sèn Bɔ 'sèn na ani ka baarakɛminɛn ka ɲɛnamaya janya.
Gɛlɛyaw ɲɛnabɔli angɛrɛko koɲɛw .
Hali ni labɛn ni dilancogo ɲuman don, draft angle koɲɛw bɛ se ka sɔrɔ hali bi pikiri kɛcogo la. Nin ye u dɔncogo n’u ɲɛnabɔcogo ye.
ka ɲɛfɔli kɛ sɛbɛn dafalen kan .
I bɛ se k’a dɔn cogo di ko i ka yɔrɔ bɛ ni sɛbɛn ye min tɛ se ka kɛ? Aw ye nin taamasiyɛnw ɲini minnu bɛ wele ko telltale.
gɛlɛya bɛ yɔrɔ in bɔ nɔgɔ la .
Drag Marks walima Scratches yelenw bɛ yɔrɔ min na .
Deformation or warping of the part of egention .
A sɛgɛnnen don kojugu walima a bɛ tiɲɛni kɛ nɔgɔbɔlan kɔnɔ .
N'i ye nin ko ninnu dɔ kɔlɔsi, waati sera ka i ka draft angles lajɛ kosɛbɛ.
correction draft in design .
Waati min ka fisa ka draft angle koɲɛw ɲɛnabɔ, o ye dilancogo waati la. Aw bɛ se ka min kɛ, o filɛ nin ye:
Aw bɛ aw ka pikirijikɛlan lajɛ joona .
Baara kɛ ni CAD baarakɛminɛnw ye walasa ka angɛrɛw sɛgɛsɛgɛ ani ka u ɲɛnabɔ .
Aw ye jateminɛ kɛ yɔrɔ wɛrɛw jateminɛcogo walima u ɲɛsincogo la .
Aw bɛ farankan yɔrɔ walima da yɔrɔ ladilan .
Ni aw bɛ fɛn dɔw Changer aw ka dilancogo la sani aw ka mɔni tigɛ, o bɛ se ka waati ni wari caman bɔ a la waati jan kɔnɔ.
Modifying Draft Moule Manufacturing waati la .
Ni draft koɲɛw dɔnna nɔgɔ dilanni kɔfɛ, o bɛɛ tɛ tunun. Sugandili dɔw bɛ yen hali bi walasa ka angɛrɛw sɛmɛntiya:
Grinding or polishing mold cavity ka caya draft .
Aw bɛ taper dɔ fara ejector pins walima bolokɔniw kan .
Aw bɛ baara kɛ ni mɔli dacogo ye walasa ka dɔ bɔ ɲɔgɔnkanu ni nɔrɔli la .
O bεε bε se ka bεn, nka u bε musaka ni gεlεya fara molding taabolo kan. A ka fisa tuma bɛɛ ka koɲɛw ɲɛnabɔ joona.
| issue | possible solution . |
| Sticking walima drag marks . | Dɔ fara draft angle kan . |
| Warping walima Deformation . | Aw bɛ sɛbɛnnibolo walima farali sira ladilan . |
| Moli tiɲɛni walima a don . | Baara kɛ ni draft caman ye abrasif fɛnw kama . |
Kuncɛli
Angles de draft (angles draft) nafa ka bon kosɛbɛ pikiri kɛli la. U bɛ dɔ bɔ ɲɔgɔnkanu na, ka yɔrɔ dɔw bɔli nɔgɔya. U bɛ nɔgɔw fana tanga sɛgɛn ni sɛgɛn ma. Baara kɛli ni draft angle ɲuman ye, o bɛ surface finish bonya ani ka nɛnɛ waati dɔgɔya, ka bɔli musakaw dɔgɔya.
Ka draft angles don ka bɔ dilancogo daminɛ na, o nafa ka bon kosɛbɛ. A bɛ fiɲɛw bali, ka fɛn dilanni teliya, ani ka yɔrɔ jogo mara. Aw bɛ fɛnw, kogow janya, ani u kɛcogo jateminɛ tuma bɛɛ ni aw bɛ a yɔrɔ jateminɛ. Aw ye aw hakili to a la ko sɛbɛn suguya o suguya ka fisa ni si tɛ kɛ ka ɲɛ.
